Grinding-machine.



No. 660,389, Ptented Oct. 23, |900.

vM. w. NEuENs.

GRINDING MACHINE.

(Appiication led Dsc. 22, 1899.)

(N o M o del.)

- UNTTED STATES PATENT QEEICE.

MICHAEL W. NEUENS, OF MILWAUKEE, WISCONSIN.

GRlNDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 660,389, dated October 23, 1900.

Application tiled. December 22, 1899. .Serial No. 741,234. (No model.)

T ati/'Z whom t may concern:

Be it known that I, MICHAEL W. NEUENS, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Grinding-IVIachines, of which the following is a specification.

My invention relates to niprovementsin grind ing-machines, with especial `reference to io that class of machines adapted for sharpening the sickles of mowing-machines, my device being, however, also adapted to be adjusted and used for sharpening other edged tools. l

The objects of my invention are, rst, to provide for automatically moving the grinding wheel or roller over the surface to be ground and lifting the same out of contact with the work at the extremities of the knife- 2o edges, the sickle-bar being held horizontally, so that the effect of the grinding may be readily observed; second, to provide means whereby the sickle-bar may be readily adjusted i-n -any desired position and secured in place without loss of time, and, third, to provide means for adapting the machine for use in grinding other tools, regard being had for simplicity of construction and convenience in the adjustment of the parts. 5o In the following description reference is had to the accompanying drawings, in which- Figure 1 is a side View of my invention. Fig. 2 is a plan view of the same. Fig. Sis a detail sectional view showing the adjustable cones which coperate with guides on the carrier to lift the grinding-roller out of Contact with the work. Fig. 4 is a detail View` Like parts are id entified by the same reference-numerals throughout the several views. l

1 is a grinding-wheel supported by a reciprocative carrier 2, the rear end of which is pivoted to a swinging yoke 3.. A rotary rnotion is imparted to the wheel 1 from a driving gear-wheel 4 through the pinion 5 and its attached sprocketed gear-wheel 6, chain 7, and sprocket-pinion 8, the latter being fast ou the shaft 9,' on whiehthe wheel 1 is mounted. A reciprocative motion is also communicated to the wheel from the dri ving gearwheel 4 through the pinion 10, attached gearwheel 11, eccentric hub 12, ring 13, latch 14, yoke 3, and the supporting-carrier 2. The latch 14 is adapted to removably engage a catch 15 on the yoke 3, (indicated by dotted lines in Fig. 1,) and when desired this latch may be disengaged from the catchrand permitted to hang, as also indicated by dotted lines in said figure, thus permitting the carrier and yoke to remain at rest or beadj usted manually by means of a handle 16, attached to the yoke.

To regulate the pressure of the grindingwheel upon the Work, I have provided aspring 17, with one end adapted to engage the carrier 2, and having its other end provided with a loop 18, adapted to engage in the hooks 19 of a bracket 20, whereby the carrier and grind ing-wheel are elastically supported. By shifting the spring from one end of the hooks 19 to another its tension may be increased or diminished as desired.

When it is'desirous to use the machine for ordinary grinding purposes, the spring 17 may be disengaged and removed and the latch 1-4 also disengaged fronrthe catch 15, when the carrier may he raised, as shown by dotted lines in Fig. 1, and supported upon the notched arm 21, with a lug 22, engaging in the 4notch of said arm. 'Ihe swinging yoke 2 permits this adjustment to be easily made, and when made the grinding-wheel is held in a stationary position and may be used for grinding knives, ehisels, and any ordinary tools.

As the grinding-wheel (shown in the drawings)'is tapered toward the ends in order to adapt it for use in grinding mowing-machine sickles, it is desirable'that ordinary grindingwheels should be substituted for grinding other tools. I have therefore provided the carrier 2 with a swinging bearing-arm 23,

which may be swung outwardly, as shown by dotted lines in Fig. 2, to release the supporting-shaft 9 of the grinding-wheel, when the latter may be readily .withd rawn from the opposing bearing and the sprocket-chain 7 disengaged from the pinion 8. The grindingwheel is secured to the shaft. by means of end ,of substituting the wheels one for the other.

The bearing-arm 23 is secured to the body of the carrier by a lock-hinge 30, whereby it maybe securely held in position when the grinding-wheel is in place.

In order to lift the reciprocative grindingwhcel from the work at the respective ends of the cutting edges of the sickle-sections, I have provided the carrier 2 with diagonal guides 31 on its under surface, which are adapted to mount upon the cone-nuts 32 as the carrier completes its movement in either direction. It will be observed, Fig. 3, that the cones 32 are located upon a supportingscrew 33. As the point at which the carrierguides 31 engage the cone is determined by the radial diameter of that portion of each cone which is in the path of its respective guide, it is obvious that the point at which the carrier is lifted may be altered at plea-sn re by shifting the cones in the supporting-screw 33 and the operation ofthe machine thereby regulated to correspond with the length of the sickle-sections. To prevent accidental shifting of the cones, I have provided the same with depending weights 35, which not only tend to swing down wardly as soon as the cones are released from contact with the guides, but also prevent the rotation of the cones on the screw unless the carrier is lifted to give the weights clearance.

' Referring to the clamping devices for holding the sickle-bar, it will be observed, Fig. 5, that I have provided a stationary bracket 36, which is secu red to the main fratrie of the Inachine by binding-screws 37 and is provided with curved arms 3S. A removable clamping-frame 39 is provided with laterally-projecting studs 40, adapted to engage in open sockets in the t'rame, with its side arms eX- tending under the free ends of the arms 38. This frame is provided with a diagonallyfaced or wedge-shaped element, such as the cross-bar 41, the under surface of which is late'rallyinclined, Fig. 6,wherebyitis adapted to serve as a Wedge for a laterally-swinging clamping-lever 42, which is provided with a forked rear end, the arms 43 of which are hooked under thekey 44, the lever being fulcrumed upon the central portion of the bracket and extended underneath the crossbar 41. It is obvious that with this construction the lever will when moved to tbe left lift the frame 39 in passing under the thicker portion of the wedge-shaped cross-bar 41.

lt will be observed, Fig. 1, that the frame 39 is recessed at 45 for the reception ot the sickle-bar, which is placed thereon with the knife-sections interposed between the frame 39 and the arms 38, so that as the frame 39 is forced upwardly by the lever 42, acting on the bar 41, the knife-sections will be clamped rigidly between the frame 39 and the arms 38, as illustrated in Figs. 1 and 2.

The actuating mechanism of my device is supported upon a standard 50, which is secured to a bracket 51, projecting upwardly from the base of the frame by a single securing-bolt 52. The standard is provided with hooks 53, engaging underneath the bracket, and the bracket is provided with a tapered bearing-post 54, engaging loosely in a central recess-in thelowerend of thestandard. With this construction the standard will be supported'by the bearing-post 54 and hooks 53 when the holt 52 is loosened for the purpose of' adjusting the standard. It is obvious that a lateral adjustment of the standard in the bracket 52 will tilt the grin ding-wheel axially and regulate the grinding bevel. As the grinding-wheels are not always uniformly tapered, this adjustment is important in order to maintain a uniform bevel for the opposing edges of the knife-sections.

Reviewing the operation of the machine and assuming that a mower-sickle is to be ground,'the sickle is tirst placed upon the clamping-frame 39 with the sickle-bar resting in the recesses 45 and the knife-sections interposed between the fralneand the bracketarms 38 and with the joint between the two knife-sections which are to be ground at the center of the frame. rlhc clamping-lever is then moved to the 'left to lift the frame and rigidly bind the knife-sections against the bracket-arms 38. The latch 14 bei ng engaged in the catch 15, the machine is actuated slowly and the cone-nuts adjusted on their screwthreaded support, so that the guides 3l will engage therewith and lift the grinding-wheel out of contact with the sickle-sections at each end ofthe cutting edges. The standard 50 is then adjusted in the bracket 51 to regulate the position of the grinding-wheel axially and provide for an equal grinding-bevel on both knife-sections, when the machine is ready for operation.

When the machine is to be used for other purposes, the latch 14 is disengaged and permitted to hang, the spring 17 disengaged and removed, and the carrier 2 lifted and hung upon the arm 21. 'Phe lock-hinge 30 ot' the arm 23 of the carrier is then loosened, and the arm swings outwardly to permit the removal of the grinding-wheel and its su pporting-shaft from thecarrier, when the wheel maybe easily removed by withdrawing the key 2G and another wheel substituted therefor. The machine may then be used in the ordinary manner for grinding knives, dac.

Having thus described my invention, what I claim as new, and desire to secure by Let-ters Patent, is-

1. In a grinding-machine, the combination of a grinding-wheel supported by a carrier from an oscillatorysupport mounted in a stationary frame or standard; driving mechanism mounted in suitable bearings in said stationary frame or standard; connections adapted to communicate mot-ion therefrom to rotate the wheel; and detachable connections adapted to coin municate motion from the driving mechanism to oscillat-e said support.

2. In a grinding-machine, the combination of a grinding-wheel supported by a carrier from an oscillatory support mounted in a stationary frame or standard; driving mechanism mounted in suitable bearings in said stationary frame or standard connections adapted t-o communicate motion therefrom to r0- tate the wheel; and connections adapted to communicate motion from the driving mechanism to oscillate said support; together with means for lifting the carrier and wheel from the work at each extremity of the surface to be `ground.

3. In a grinding-machine, the combination of a. grinding-wheel supported by a carrier from an oscillatory support mounted in a stationary frame or standard; driving mechanism mounted in suitable bearings in said stationary frame or standard; connections adapted to communicate motion therefrom to rotate the wheels; and connections adapted to communicate motion from the driving mechanism to oscillate said support; together with an elastic connection between the carrier and a fixed point on the machine-frame, adapted to relieve the pressure of the wheel upon the work.

4. In a grinding-machine, the combination of a grinding-wheel supported by a carrier from an oscillatory support mounted in a stationary frame or standard; driving mechanism mounted in suitable bearings in said stationary frame or standard; connections adapted to communicate motion therefrom to rotate the wheels; and connections adapted to communicate motion from the driving mechanism to oscllate said support; together with a yielding connection adjustably secured to the machine-frame, and adapted to relieve the pressure of the wheel upon the work.

In a grinding-machine, the combination of a grinding-wheel supported by a carrier from an oscillatory support mounted in a stationary frame or standard; driving mechanism mounted in suitable bearings in said stationary frame or standard; connections adapted to communicate motion therefrom to rotate the wheel; and connections adapted to communicate motion from the driving mechanism to oscillate said support; together with one or more suitable guides located on the carrier, and one or more adjustable conical bear- Y ings located in the path of the guides, whereby said carrier is lifted as the guides impinge on said bearings.

6. In a grinding-machine, the combination of a grinding-wheel supported by a carrier from a swinging support; suitable actuating mechanism for rotating the wheel; automatic mechanism, coperative with the wheel-rotating mechanism, for reciprocating the carrier and the wheel; together with means for diseugaging thel reciprocating mechanism; and means for supporting the carrier and wheel in a raised position, said carrier being. provided with a laterally-swinging'bearing-arm, adapted to be adjusted to releasefthe shaft of the grinding-wheel- 7. In a grinding-machine, the combination of a grinding-wheel supported by a carrier from a swinging support; suitable actuating mechanism for rotating the wheel; automatic mechanism, coperat-ive with the wheel-rotating mechanisnn-'for reciprocating the carrier and the Wheel; together with means for disengaging the reciprocating mechanism; and means for supporting the carrier and wheel in a raised position, said carrier being provided with a laterally-swinging bearing-arm, adapted to be adjusted to release the shaft of the grinding-Wheel; and said grinding-wheel being clamped upon the shaft by end bindingplates, and a Wedge-shaped key cooperative therewith.

8. In a grinding-machine, thecombination of a grinding-wheel supported by a carrier from a swinging support; suitable actuating mechanism for rotating' the wheel; and automatic mechanism, cooperative with the wheelrotating mechanism, for reciprocating the car-rier and the wheel; the wheel and carrier being supported by a single standard,adapted to be swung laterally, and adjusted to regulate the grinding-bevel of the wheel.

9. In a grinding-machine, the combinationof a grinding-wheel supported by a carrier from a swinging support; suitable actuating mechanism for rotating the wheel; and au t0- matic mechanism, cooperative with the wheelrotating mechanism,for reciprocating the carrier and the wheel; together with means for securing grinding-wheels of various linear dimensions in position with a single bindingkey.

l0. In a grinding-machine, the combination with the base-f rame of a stationary bracket, provided with rigid arms; a clamping-frame pivotally secured to the bracket, and having one of its elements diagonally faced laterally; and a clamping-lever hinged toy the baseframe, and extended under the diagonally- Vfaced element of the clamping-frame; said.

lever being arranged to swing laterally, and push the clamping-frame toward the arms of the stationary bracket, when the lever passes under the lower portion of the diagonallyfaced element.

Il. In a grinding-machine, the combination l'OO with the base-frame; of astationary bracket, provided with rigid arms; a clamping-frame pivotally secured to the bracket, With its side bars extending under the arms of the stationary bracket, and having one of its elements diagonally faced laterally; and a clampinglever hinged to the base-frame and extended under the diagonally-faced element of the clamping-frame; said lever being arranged to swing laterally, and push the clampingframe toward the arms of the stationary bracket, when the lever passes under the lower portion ofthe diagonally-faced elemcn t( 12. Inagrinding-machine, the combination with the base-frame; of a stationary bracket provided with rigid arms; a clamping-frame arranged with its side bars extending under said arms, and adapted to receive a sicklebar with the sickle-sections interposed between the frame and said rigid arms; a diagonally-faced element in said frame; and swinging lever, cooperative with said element, to move the frame into clamping engagement With the'arms of the stationary bracket.

13. In a grinding-machine, the combination with the base-frame; of a stationary bracket provided with rigid arms; a clamping-frame arranged with its side bars extending under said arms, and adapted to receive a sicklebar with the sickle-sections interposed between the frame and said rigid arms; a diagonally-faced element in said frame; and a swinging lever, coperative with said element, to move the frame into clamping engagement with the arms of the stationary bracket; together with means for reciprocating a rotary grinding-wheel over the cutting edges of the knife-sections engaged by said frame.

14. In a grinding-machine, having a reciprocating grinding Wheel, the combination with the wheel-supporting carrier; of one or more guides carried thereby; and adjustable conical nuts adapted to engage the guides and support the carrier, at the completion of its movement.

15. In a grinding-machine;having a reciprocating grindingwheel, the combination, with the wheel-supporting carrier; of one or more diagonally-faced guides carried thereby; and conica'l nuts supported on screw-threaded bearings, and adapted to be adjusted thereon across the path of the guides.

16. In a grinding-machine, having a reciprocating grindingwheel, the combination, with the wheel-supporting carrier; of one or more diagonally-faced guides carried thereby; and conical n nts supported on screw-threaded bearings, and adapted to be adj usted thereon, across the path of the guides, said nuts being provided with depending weights, adapted to prevent their accidental rotation.

17. In agrinding-machine, the combination with the base-frame; of a stationary bracket provided with rigid arms; a clamping-frame arranged to oppose said arms, .and adapted to receive a sickle-bar with the sickle-sections interposed between the frame and said rigid arms; and a swinging lever operative to move said frame into clamping position with respect to the arms of the stationary bracket.

In testimony whereof I ax my signature in the presence of two witnesses.

MICHAEL W. NEUENS.

Witnesses:

JAS. B. ERWIN, LEVERETT C. WHEELER. 

